Miners in Myanmar have discovered a rare ruby of enormous size, considered to be the second-largest by weight ever found in the conflict-battered Southeast Asian nation, state media reported Friday. The ruby, measuring 11,000 carats (2.2 kilograms, or 4.8 pounds), was unearthed near the town of Mogok, in the upper Mandalay region, the heartland of the lucrative gem-mining industry that has recently experienced intense fighting in the country’s wide-ranging civil war. According to a report from the state-run Global New Light of Myanmar, the newly found rough ruby was discovered in mid-April, just after the traditional New Year festival. While...